Prior to resection, we will use a sterile caliper to take an in-vivo measurement of the IMA and IMV. Immediately after resection, we will remove the sealed proximal end of the IMA and the 3 cm distal to it from the surgical specimen. We will similarly prepare the IMV. We will inspect our vessels for any iatrogenic traumatic tears. If the vessels are suitable, we will then gentle apply manual traction to remove any blood or clots within the lumen. We will measure the outer diameter of the vessels using a digital caliper. If there are small branches, we will tie them off with suture. The unsealed end will then be attached to the burst pressure tester with suture and it will be tested for the bursting pressure. The device measures pressure continuously as it infuses the segment with normal saline at a steady rate (50 ml/hr). A leak will be determined by a decrease in intra-luminal pressure of 100 mm Hg or a visible leak. A failure to seal the vessels will be determined by a bursting pressure of less than 100 mm Hg. It should be noted that each section would only be pressure-tested once. All of our data will be collected on the enclosed data sheet we have created for use in this protocol. We will then place the vessels with the original surgical specimen where it will be submitted for routine pathological examination of surgical specimens. Twenty five specimens at each site will undergo the testing, whereas 5 specimens will be sent to pathology without testing.